Thermodynamics of oxygen in Y1Ba2Cu3Ox between 450° C and 650° C

P Schleger, WN Hardy, BX Yang - Physica C: Superconductivity, 1991 - Elsevier
We have measured the vapour pressure of oxygen in Y 1 Ba 2 Cu 3 O x as a function of x at
constant temperature between 450° C and650° C for pressures between 10 m Torr and …

The structural phase diagram and oxygen equilibrium partial pressure of YBa2Cu3O6+ x studied by neutron powder diffraction and gas volumetry

NH Andersen, B Lebech, HF Poulsen - Physica C: Superconductivity, 1990 - Elsevier
An experimental technique based on neutron powder diffraction and gas volumetry is
presented and used to study the structural phase diagram of YBa 2 Cu 3 O 6+ x under …

Mechanism for electric field effects observed in films

N Chandrasekhar, OT Valls, AM Goldman - Physical review letters, 1993 - APS
The chain oxygen dynamics of YBa 2 Cu 3 O 7− x have been investigated using a Monte
Carlo simulation of the asymmetric next-nearest-neighbor Ising model for the oxygen atoms …

Charging effects observed in films: Influence of oxygen ordering

N Chandrasekhar, OT Valls, AM Goldman - Physical Review B, 1994 - APS
The chain oxygen dynamics of YBa 2 Cu 3 O 7− x have been investigated using a Monte
Carlo simulation of the asymmetric next-nearest-neighbor Ising model for the oxygen atoms …

Determining ground states of alloys by a symmetry-based classification

YJ Cen, CC He, SB Qiu, YJ Zhao, XB Yang - Physical Review Materials, 2022 - APS
Reducing the number of candidate structures is crucial to improve the efficiency of global
optimization. Herein, we demonstrate that the generalized Hamiltonian can be described by …

Oxygen superstructures in semiconducting RBa2Cu3O6+ x

AA Aligia, J Garces, H Bonadeo - Physica C: Superconductivity, 1992 - Elsevier
We study the ground state and weakly excited oxygen superstructures of RBA 2 Cu 3 O 6+ x,
where R= Y or a rare earth, using a model lattice gas Hamiltonian introduced earlier by the …

On the asymmetric next-nearest-neighbor ising model of oxygen ordering in YBa2Cu3Oz

D De Fontaine, M Asta, G Ceder… - Europhysics …, 1992 - iopscience.iop.org
Basic results concerning oxygen ordering in the superconducting compound YBa 2 Cu 3 O z
are briefly summarized. It is shown that, at equilibrium, only infinite-chain structures can be …

Twin-domain size and bulk oxygen in-diffusion kinetics of YBa2Cu3O6+ x studied by neutron powder diffraction and gas volumetry

HF Poulsen, NH Andersen, B Lebech - Physica C: Superconductivity, 1991 - Elsevier
We report experimental results of twin-domain size and bulk oxygen in-diffusion kinetics of
YBa 2 Cu 3 O 6+ x, which supplement a previous and simultaneous study of the structural …

Atomic structure of YBa2Cu3O6+ x determined by Coulomb repulsion

AA Aligia - Europhysics Letters, 1992 - iopscience.iop.org
Recent results obtained by neutron diffraction measurements for x∼ 3/8 do not support the
existence of any superstructure (SS) composed of parallel full and empty CuO chains, as …

Critical chain length and superconductivity emergence in oxygen-equalized pairs of

P Manca, S Sanna, G Calestani, A Migliori, R De Renzi… - Physical Review B, 2000 - APS
The oxygen-order dependent emergence of superconductivity in YBa 2 Cu 3 O 6+ x is
studied in a comparative way on pair samples having the same oxygen content and thermal …